Error 5 when installing service pack 2 Tags: Configuration Registry Windows XP Last response: February 12, 2010 12:45 AM in Windows XP Share Anonymous February 11, 2010 3:21:09 PM Hello, I got an error 5:access denied could not back up registry key when trying to install Service Pack 2 for Windows xp More about : error installing service pack Emolaser February 11, 2010 4:17:22 PM Has the registry key already been used? If so, you would more than likely have to order a replacement registry key from one of Microsoft's caller lines. I beileve a new key would cost around 20 USD, not quite sure though. Hopefully, this will help. m 0 l saran008 February 12, 2010 12:44:48 AM you can edit the Permissions on this registry key to see if doing so will allow the installation of SP2 to complete : Start > Run > type in regedit Click OK or press Enter Click the plus sign next to HKEY_CLASSES_ROOT Scroll down to .dvr-ms *Right* clickt .dvr-ms and choose Permissions Make sure that System is listed with these Permissions: Full Control Read If not, check those boxes and then click Apply, OK. Close the registry editor. Then read the pre-installation links that PABear provided. IF the Access Denied message appears after doing all of the above, check http://winhlp.com/node/125#Cannot_install_Service_Pack_... specifically, the 'Access Denied' section. m 0 l Can't find your answer ? Ask ! Get the answer saran008 February 12, 2010 12:45:31 AM Log-on as Administrator and disable your anti-virus application before attempting to install WinXP SP2. Windows XP Service Pack 2 Problem Solver: http://winhlp.com/WxSP2.htm What to Know Before Downloading/Installing SP2 http://www.microsoft.com/windowsxp/sp2/sp2_whattoknow.m... Installing SP2 Step-by-Step http://support.microsoft.com/default.aspx?scid=fh;[ln];xpsp2insthowto Troubleshooting Your Installation http://support.microsoft.com/default.aspx?scid=fh;[ln];xpsp2insttshoot WinXP SP2 FAQ: What to do after installing SP2 http://support.microsoft.com/default.aspx?scid=fh;ln;xpsp2installed Service Pack (any) Installation Checklist (MVP Jupiter Jones) http://www3.telus.net/dandemar/spackins.htm WinXP SP2-specific Page (MVP Jupiter Jones) http://www3.telus.net/dandemar/xpsp2.htm The hard disk space requirements for Windows XP Service Pack 2 http://support.microsoft.com/default.aspx?kbid=837783 m 0 l Can't find your answer ? Ask ! Publish Related resources service pack 2 installing - copy error Forum cannot install Service Pack 2/ msgina.dll corrupted error Forum Installation Error for Windows XP Service Pack 2 Forum Eflc fatal error windows xp need to have service pack 3 or higher top poceed 2 Forum System recovered from serious error - Service Pack 2 Forum when trying to install windows xp service pack 2 to a new hard drive It reads press any key to boot cd ntldr is missing keybo Forum Problem installing skype on service pack 2 Forum .exe error messages post service pack 3 install Forum Can I just install service pack 2 with IE7 Forum Problems after installing windows xp service pack 2 Forum Problem installing service pack 2 on windows xp Forum SolvedWindows installer windows xp service pack 2 2002 Forum After installing Service Pack 2, sleep mode stopped working correctly Forum Error setting up service pack 2 Forum Service pack 2 windows file protection error Forum Service Pack 2 Set up error Forum Service pack 2 error message Forum Trouble installing Service Pack 2 Forum Wireless Not Working After Installing Service Pack 2 Forum Installing service pack 2 screws up my mouse Forum More resources Read discussions in other Windows XP categories Configuration Customization Drivers Security Video !